Contractors face yellowing and red discoloration in silicone sealants, affecting project quality and appearance. Choose high-quality, UV-resistant, non yellowing silicone sealants to minimize rework. Why Does Silicone Sealants Change Color Over Time? 1. Ultraviolet Radiation Prolonged exposure to ultraviolet radiation can damage the chemical structure of silicone caulk. 2. Chemical Reactions with Environmental Pollutants Ozone[…..]